Neutron bundle migration to the new redesigned schema independent Library and Plugin.

- Bulk of the changes are API migration.
- Introduced a few convenience methods in the Plugin layer
- Disabled a Unit Test that is not applicable with the new redesign. We can enable it once the changes are tested.

Change-Id: I00f44a944f4dadb221791940d1e144b6aebb561b
Signed-off-by: Madhu Venugopal <mavenugo@gmail.com>
Signed-off-by: Dave Tucker <djt@redhat.com>